DIGICARD 64K Extended 80 Column RGB Card for Apple IIe Instruction Manual
The DIGICARD extended 80 column R.G.B. card was designed to allow the Apple //e to operate a colour monitor with Red, Green and Blue inputs (R.G.B. monitor) without losing other facilities the auxiliary slot offers. Namely an additional 64K of Random Access Memory (RAM).
It even enhances the Apple HI-RES screen with a sophisticated interpreting system that produces results far superior than are possible with more conventional R.G.B. cards. The DIGICARD emulates Apple's Extended 80 Column Card while providing output suitable for analogue RGB monitors such as the KAGA (Taxan) range.